( function () {

	var TransformControls = function ( camera, domElement ) {

		if ( domElement === undefined ) {

			console.warn( 'THREE.TransformControls: The second parameter "domElement" is now mandatory.' );
			domElement = document;

		}

		THREE.Object3D.call( this );
		this.visible = false;
		this.domElement = domElement;

		var _gizmo = new TransformControlsGizmo();

		this.add( _gizmo );

		var _plane = new TransformControlsPlane();

		this.add( _plane );
		var scope = this; // Define properties with getters/setter
		// Setting the defined property will automatically trigger change event
		// Defined properties are passed down to gizmo and plane

		defineProperty( 'camera', camera );
		defineProperty( 'object', undefined );
		defineProperty( 'enabled', true );
		defineProperty( 'axis', null );
		defineProperty( 'mode', 'translate' );
		defineProperty( 'translationSnap', null );
		defineProperty( 'rotationSnap', null );
		defineProperty( 'scaleSnap', null );
		defineProperty( 'space', 'world' );
		defineProperty( 'size', 1 );
		defineProperty( 'dragging', false );
		defineProperty( 'showX', true );
		defineProperty( 'showY', true );
		defineProperty( 'showZ', true );
		var changeEvent = {
			type: 'change'
		};
		var mouseDownEvent = {
			type: 'mouseDown'
		};
		var mouseUpEvent = {
			type: 'mouseUp',
			mode: scope.mode
		};
		var objectChangeEvent = {
			type: 'objectChange'
		}; // Reusable utility variables

		var raycaster = new THREE.Raycaster();

		function intersectObjectWithRay( object, raycaster, includeInvisible ) {

			var allIntersections = raycaster.intersectObject( object, true );

			for ( var i = 0; i < allIntersections.length; i ++ ) {

				if ( allIntersections[ i ].object.visible || includeInvisible ) {

					return allIntersections[ i ];

				}

			}

			return false;

		}

		var _tempVector = new THREE.Vector3();

		var _tempVector2 = new THREE.Vector3();

		var _tempQuaternion = new THREE.Quaternion();

		var _unit = {
			X: new THREE.Vector3( 1, 0, 0 ),
			Y: new THREE.Vector3( 0, 1, 0 ),
			Z: new THREE.Vector3( 0, 0, 1 )
		};
		var pointStart = new THREE.Vector3();
		var pointEnd = new THREE.Vector3();
		var offset = new THREE.Vector3();
		var rotationAxis = new THREE.Vector3();
		var startNorm = new THREE.Vector3();
		var endNorm = new THREE.Vector3();
		var rotationAngle = 0;
		var cameraPosition = new THREE.Vector3();
		var cameraQuaternion = new THREE.Quaternion();
		var cameraScale = new THREE.Vector3();
		var parentPosition = new THREE.Vector3();
		var parentQuaternion = new THREE.Quaternion();
		var parentQuaternionInv = new THREE.Quaternion();
		var parentScale = new THREE.Vector3();
		var worldPositionStart = new THREE.Vector3();
		var worldQuaternionStart = new THREE.Quaternion();
		var worldScaleStart = new THREE.Vector3();
		var worldPosition = new THREE.Vector3();
		var worldQuaternion = new THREE.Quaternion();
		var worldQuaternionInv = new THREE.Quaternion();
		var worldScale = new THREE.Vector3();
		var eye = new THREE.Vector3();
		var positionStart = new THREE.Vector3();
		var quaternionStart = new THREE.Quaternion();
		var scaleStart = new THREE.Vector3(); // TODO: remove properties unused in plane and gizmo

		defineProperty( 'worldPosition', worldPosition );
		defineProperty( 'worldPositionStart', worldPositionStart );
		defineProperty( 'worldQuaternion', worldQuaternion );
		defineProperty( 'worldQuaternionStart', worldQuaternionStart );
		defineProperty( 'cameraPosition', cameraPosition );
		defineProperty( 'cameraQuaternion', cameraQuaternion );
		defineProperty( 'pointStart', pointStart );
		defineProperty( 'pointEnd', pointEnd );
		defineProperty( 'rotationAxis', rotationAxis );
		defineProperty( 'rotationAngle', rotationAngle );
		defineProperty( 'eye', eye );
		{

			domElement.addEventListener( 'pointerdown', onPointerDown );
			domElement.addEventListener( 'pointermove', onPointerHover );
			scope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp );

		}

		this.dispose = function () {

			domElement.removeEventListener( 'pointerdown', onPointerDown );
			domElement.removeEventListener( 'pointermove', onPointerHover );
			scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove );
			scope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp );
			this.traverse( function ( child ) {

				if ( child.geometry ) child.geometry.dispose();
				if ( child.material ) child.material.dispose();

			} );

		}; // Set current object


		this.attach = function ( object ) {

			this.object = object;
			this.visible = true;
			return this;

		}; // Detatch from object


		this.detach = function () {

			this.object = undefined;
			this.visible = false;
			this.axis = null;
			return this;

		}; // Defined getter, setter and store for a property


		function defineProperty( propName, defaultValue ) {

			var propValue = defaultValue;
			Object.defineProperty( scope, propName, {
				get: function () {

					return propValue !== undefined ? propValue : defaultValue;

				},
				set: function ( value ) {

					if ( propValue !== value ) {

						propValue = value;
						_plane[ propName ] = value;
						_gizmo[ propName ] = value;
						scope.dispatchEvent( {
							type: propName + '-changed',
							value: value
						} );
						scope.dispatchEvent( changeEvent );

					}

				}
			} );
			scope[ propName ] = defaultValue;
			_plane[ propName ] = defaultValue;
			_gizmo[ propName ] = defaultValue;

		} // updateMatrixWorld	updates key transformation variables


		this.updateMatrixWorld = function () {

			if ( this.object !== undefined ) {

				this.object.updateMatrixWorld();

				if ( this.object.parent === null ) {

					console.error( 'TransformControls: The attached 3D object must be a part of the scene graph.' );

				} else {

					this.object.parent.matrixWorld.decompose( parentPosition, parentQuaternion, parentScale );

				}

				this.object.matrixWorld.decompose( worldPosition, worldQuaternion, worldScale );
				parentQuaternionInv.copy( parentQuaternion ).invert();
				worldQuaternionInv.copy( worldQuaternion ).invert();

			}

			this.camera.updateMatrixWorld();
			this.camera.matrixWorld.decompose( cameraPosition, cameraQuaternion, cameraScale );
			eye.copy( cameraPosition ).sub( worldPosition ).normalize();
			THREE.Object3D.prototype.updateMatrixWorld.call( this );

		};

		this.pointerHover = function ( pointer ) {

			if ( this.object === undefined || this.dragging === true ) return;
			raycaster.setFromCamera( pointer, this.camera );
			var intersect = intersectObjectWithRay( _gizmo.picker[ this.mode ], raycaster );

			if ( intersect ) {

				this.axis = intersect.object.name;

			} else {

				this.axis = null;

			}

		};

		this.pointerDown = function ( pointer ) {

			if ( this.object === undefined || this.dragging === true || pointer.button !== 0 ) return;

			if ( this.axis !== null ) {

				raycaster.setFromCamera( pointer, this.camera );
				var planeIntersect = intersectObjectWithRay( _plane, raycaster, true );

				if ( planeIntersect ) {

					var space = this.space;

					if ( this.mode === 'scale' ) {

						space = 'local';

					} else if ( this.axis === 'E' || this.axis === 'XYZE' || this.axis === 'XYZ' ) {

						space = 'world';

					}

					if ( space === 'local' && this.mode === 'rotate' ) {

						var snap = this.rotationSnap;
						if ( this.axis === 'X' && snap ) this.object.rotation.x = Math.round( this.object.rotation.x / snap ) * snap;
						if ( this.axis === 'Y' && snap ) this.object.rotation.y = Math.round( this.object.rotation.y / snap ) * snap;
						if ( this.axis === 'Z' && snap ) this.object.rotation.z = Math.round( this.object.rotation.z / snap ) * snap;

					}

					this.object.updateMatrixWorld();
					this.object.parent.updateMatrixWorld();
					positionStart.copy( this.object.position );
					quaternionStart.copy( this.object.quaternion );
					scaleStart.copy( this.object.scale );
					this.object.matrixWorld.decompose( worldPositionStart, worldQuaternionStart, worldScaleStart );
					pointStart.copy( planeIntersect.point ).sub( worldPositionStart );

				}

				this.dragging = true;
				mouseDownEvent.mode = this.mode;
				this.dispatchEvent( mouseDownEvent );

			}

		};

		this.pointerMove = function ( pointer ) {

			var axis = this.axis;
			var mode = this.mode;
			var object = this.object;
			var space = this.space;

			if ( mode === 'scale' ) {

				space = 'local';

			} else if ( axis === 'E' || axis === 'XYZE' || axis === 'XYZ' ) {

				space = 'world';

			}

			if ( object === undefined || axis === null || this.dragging === false || pointer.button !== - 1 ) return;
			raycaster.setFromCamera( pointer, this.camera );
			var planeIntersect = intersectObjectWithRay( _plane, raycaster, true );
			if ( ! planeIntersect ) return;
			pointEnd.copy( planeIntersect.point ).sub( worldPositionStart );

			if ( mode === 'translate' ) {

				// Apply translate
				offset.copy( pointEnd ).sub( pointStart );

				if ( space === 'local' && axis !== 'XYZ' ) {

					offset.applyQuaternion( worldQuaternionInv );

				}

				if ( axis.indexOf( 'X' ) === - 1 ) offset.x = 0;
				if ( axis.indexOf( 'Y' ) === - 1 ) offset.y = 0;
				if ( axis.indexOf( 'Z' ) === - 1 ) offset.z = 0;

				if ( space === 'local' && axis !== 'XYZ' ) {

					offset.applyQuaternion( quaternionStart ).divide( parentScale );

				} else {

					offset.applyQuaternion( parentQuaternionInv ).divide( parentScale );

				}

				object.position.copy( offset ).add( positionStart ); // Apply translation snap

				if ( this.translationSnap ) {

					if ( space === 'local' ) {

						object.position.applyQuaternion( _tempQuaternion.copy( quaternionStart ).invert() );

						if ( axis.search( 'X' ) !== - 1 ) {

							object.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;

						}

						if ( axis.search( 'Y' ) !== - 1 ) {

							object.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;

						}

						if ( axis.search( 'Z' ) !== - 1 ) {

							object.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;

						}

						object.position.applyQuaternion( quaternionStart );

					}

					if ( space === 'world' ) {

						if ( object.parent ) {

							object.position.add( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );

						}

						if ( axis.search( 'X' ) !== - 1 ) {

							object.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;

						}

						if ( axis.search( 'Y' ) !== - 1 ) {

							object.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;

						}

						if ( axis.search( 'Z' ) !== - 1 ) {

							object.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;

						}

						if ( object.parent ) {

							object.position.sub( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );

						}

					}

				}

			} else if ( mode === 'scale' ) {

				if ( axis.search( 'XYZ' ) !== - 1 ) {

					var d = pointEnd.length() / pointStart.length();
					if ( pointEnd.dot( pointStart ) < 0 ) d *= - 1;

					_tempVector2.set( d, d, d );

				} else {

					_tempVector.copy( pointStart );

					_tempVector2.copy( pointEnd );

					_tempVector.applyQuaternion( worldQuaternionInv );

					_tempVector2.applyQuaternion( worldQuaternionInv );

					_tempVector2.divide( _tempVector );

					if ( axis.search( 'X' ) === - 1 ) {

						_tempVector2.x = 1;

					}

					if ( axis.search( 'Y' ) === - 1 ) {

						_tempVector2.y = 1;

					}

					if ( axis.search( 'Z' ) === - 1 ) {

						_tempVector2.z = 1;

					}

				} // Apply scale


				object.scale.copy( scaleStart ).multiply( _tempVector2 );

				if ( this.scaleSnap ) {

					if ( axis.search( 'X' ) !== - 1 ) {

						object.scale.x = Math.round( object.scale.x / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;

					}

					if ( axis.search( 'Y' ) !== - 1 ) {

						object.scale.y = Math.round( object.scale.y / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;

					}

					if ( axis.search( 'Z' ) !== - 1 ) {

						object.scale.z = Math.round( object.scale.z / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;

					}

				}

			} else if ( mode === 'rotate' ) {

				offset.copy( pointEnd ).sub( pointStart );
				var ROTATION_SPEED = 20 / worldPosition.distanceTo( _tempVector.setFromMatrixPosition( this.camera.matrixWorld ) );

				if ( axis === 'E' ) {

					rotationAxis.copy( eye );
					rotationAngle = pointEnd.angleTo( pointStart );
					startNorm.copy( pointStart ).normalize();
					endNorm.copy( pointEnd ).normalize();
					rotationAngle *= endNorm.cross( startNorm ).dot( eye ) < 0 ? 1 : - 1;

				} else if ( axis === 'XYZE' ) {

					rotationAxis.copy( offset ).cross( eye ).normalize();
					rotationAngle = offset.dot( _tempVector.copy( rotationAxis ).cross( this.eye ) ) * ROTATION_SPEED;

				} else if ( axis === 'X' || axis === 'Y' || axis === 'Z' ) {

					rotationAxis.copy( _unit[ axis ] );

					_tempVector.copy( _unit[ axis ] );

					if ( space === 'local' ) {

						_tempVector.applyQuaternion( worldQuaternion );

					}

					rotationAngle = offset.dot( _tempVector.cross( eye ).normalize() ) * ROTATION_SPEED;

				} // Apply rotation snap


				if ( this.rotationSnap ) rotationAngle = Math.round( rotationAngle / this.rotationSnap ) * this.rotationSnap;
				this.rotationAngle = rotationAngle; // Apply rotate

				if ( space === 'local' && axis !== 'E' && axis !== 'XYZE' ) {

					object.quaternion.copy( quaternionStart );
					object.quaternion.multiply( _tempQuaternion.setFromAxisAngle( rotationAxis, rotationAngle ) ).normalize();

				} else {

					rotationAxis.applyQuaternion( parentQuaternionInv );
					object.quaternion.copy( _tempQuaternion.setFromAxisAngle( rotationAxis, rotationAngle ) );
					object.quaternion.multiply( quaternionStart ).normalize();

				}

			}

			this.dispatchEvent( changeEvent );
			this.dispatchEvent( objectChangeEvent );

		};

		this.pointerUp = function ( pointer ) {

			if ( pointer.button !== 0 ) return;

			if ( this.dragging && this.axis !== null ) {

				mouseUpEvent.mode = this.mode;
				this.dispatchEvent( mouseUpEvent );

			}

			this.dragging = false;
			this.axis = null;

		}; // normalize mouse / touch pointer and remap {x,y} to view space.


		function getPointer( event ) {

			if ( scope.domElement.ownerDocument.pointerLockElement ) {

				return {
					x: 0,
					y: 0,
					button: event.button
				};

			} else {

				var pointer = event.changedTouches ? event.changedTouches[ 0 ] : event;
				var rect = domElement.getBoundingClientRect();
				return {
					x: ( pointer.clientX - rect.left ) / rect.width * 2 - 1,
					y: - ( pointer.clientY - rect.top ) / rect.height * 2 + 1,
					button: event.button
				};

			}

		} // mouse / touch event handlers


		function onPointerHover( event ) {

			if ( ! scope.enabled ) return;

			switch ( event.pointerType ) {

				case 'mouse':
				case 'pen':
					scope.pointerHover( getPointer( event ) );
					break;

			}

		}

		function onPointerDown( event ) {

			if ( ! scope.enabled ) return;
			scope.domElement.style.touchAction = 'none'; // disable touch scroll

			scope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove );
			scope.pointerHover( getPointer( event ) );
			scope.pointerDown( getPointer( event ) );

		}

		function onPointerMove( event ) {

			if ( ! scope.enabled ) return;
			scope.pointerMove( getPointer( event ) );

		}

		function onPointerUp( event ) {

			if ( ! scope.enabled ) return;
			scope.domElement.style.touchAction = '';
			scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove );
			scope.pointerUp( getPointer( event ) );

		} // TODO: deprecate


		this.getMode = function () {

			return scope.mode;

		};

		this.setMode = function ( mode ) {

			scope.mode = mode;

		};

		this.setTranslationSnap = function ( translationSnap ) {

			scope.translationSnap = translationSnap;

		};

		this.setRotationSnap = function ( rotationSnap ) {

			scope.rotationSnap = rotationSnap;

		};

		this.setScaleSnap = function ( scaleSnap ) {

			scope.scaleSnap = scaleSnap;

		};

		this.setSize = function ( size ) {

			scope.size = size;

		};

		this.setSpace = function ( space ) {

			scope.space = space;

		};

		this.update = function () {

			console.warn( 'THREE.TransformControls: update function has no more functionality and therefore has been deprecated.' );

		};

	};

	TransformControls.prototype = Object.assign( Object.create( THREE.Object3D.prototype ), {
		constructor: TransformControls,
		isTransformControls: true
	} );

	var TransformControlsGizmo = function () {

		'use strict';

		THREE.Object3D.call( this );
		this.type = 'TransformControlsGizmo'; // shared materials

		var gizmoMaterial = new THREE.MeshBasicMaterial( {
			depthTest: false,
			depthWrite: false,
			transparent: true,
			side: THREE.DoubleSide,
			fog: false,
			toneMapped: false
		} );
		var gizmoLineMaterial = new THREE.LineBasicMaterial( {
			depthTest: false,
			depthWrite: false,
			transparent: true,
			linewidth: 1,
			fog: false,
			toneMapped: false
		} ); // Make unique material for each axis/color

		var matInvisible = gizmoMaterial.clone();
		matInvisible.opacity = 0.15;
		var matHelper = gizmoMaterial.clone();
		matHelper.opacity = 0.33;
		var matRed = gizmoMaterial.clone();
		matRed.color.set( 0xff0000 );
		var matGreen = gizmoMaterial.clone();
		matGreen.color.set( 0x00ff00 );
		var matBlue = gizmoMaterial.clone();
		matBlue.color.set( 0x0000ff );
		var matWhiteTransparent = gizmoMaterial.clone();
		matWhiteTransparent.opacity = 0.25;
		var matYellowTransparent = matWhiteTransparent.clone();
		matYellowTransparent.color.set( 0xffff00 );
		var matCyanTransparent = matWhiteTransparent.clone();
		matCyanTransparent.color.set( 0x00ffff );
		var matMagentaTransparent = matWhiteTransparent.clone();
		matMagentaTransparent.color.set( 0xff00ff );
		var matYellow = gizmoMaterial.clone();
		matYellow.color.set( 0xffff00 );
		var matLineRed = gizmoLineMaterial.clone();
		matLineRed.color.set( 0xff0000 );
		var matLineGreen = gizmoLineMaterial.clone();
		matLineGreen.color.set( 0x00ff00 );
		var matLineBlue = gizmoLineMaterial.clone();
		matLineBlue.color.set( 0x0000ff );
		var matLineCyan = gizmoLineMaterial.clone();
		matLineCyan.color.set( 0x00ffff );
		var matLineMagenta = gizmoLineMaterial.clone();
		matLineMagenta.color.set( 0xff00ff );
		var matLineYellow = gizmoLineMaterial.clone();
		matLineYellow.color.set( 0xffff00 );
		var matLineGray = gizmoLineMaterial.clone();
		matLineGray.color.set( 0x787878 );
		var matLineYellowTransparent = matLineYellow.clone();
		matLineYellowTransparent.opacity = 0.25; // reusable geometry

		var arrowGeometry = new THREE.CylinderGeometry( 0, 0.05, 0.2, 12, 1, false );
		var scaleHandleGeometry = new THREE.BoxGeometry( 0.125, 0.125, 0.125 );
		var lineGeometry = new THREE.BufferGeometry();
		lineGeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0, 1, 0, 0 ], 3 ) );

		var CircleGeometry = function ( radius, arc ) {

			var geometry = new THREE.BufferGeometry();
			var vertices = [];

			for ( var i = 0; i <= 64 * arc; ++ i ) {

				vertices.push( 0, Math.cos( i / 32 * Math.PI ) * radius, Math.sin( i / 32 * Math.PI ) * radius );

			}

			geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
			return geometry;

		}; // Special geometry for transform helper. If scaled with position vector it spans from [0,0,0] to position


		var TranslateHelperGeometry = function () {

			var geometry = new THREE.BufferGeometry();
			geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0, 1, 1, 1 ], 3 ) );
			return geometry;

		}; // Gizmo definitions - custom hierarchy definitions for setupGizmo() function


		var gizmoTranslate = {
			X: [[ new THREE.Mesh( arrowGeometry, matRed ), [ 1, 0, 0 ], [ 0, 0, - Math.PI / 2 ], null, 'fwd' ], [ new THREE.Mesh( arrowGeometry, matRed ), [ 1, 0, 0 ], [ 0, 0, Math.PI / 2 ], null, 'bwd' ], [ new THREE.Line( lineGeometry, matLineRed ) ]],
			Y: [[ new THREE.Mesh( arrowGeometry, matGreen ), [ 0, 1, 0 ], null, null, 'fwd' ], [ new THREE.Mesh( arrowGeometry, matGreen ), [ 0, 1, 0 ], [ Math.PI, 0, 0 ], null, 'bwd' ], [ new THREE.Line( lineGeometry, matLineGreen ), null, [ 0, 0, Math.PI / 2 ]]],
			Z: [[ new THREE.Mesh( arrowGeometry, matBlue ), [ 0, 0, 1 ], [ Math.PI / 2, 0, 0 ], null, 'fwd' ], [ new THREE.Mesh( arrowGeometry, matBlue ), [ 0, 0, 1 ], [ - Math.PI / 2, 0, 0 ], null, 'bwd' ], [ new THREE.Line( lineGeometry, matLineBlue ), null, [ 0, - Math.PI / 2, 0 ]]],
			XYZ: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.1, 0 ), matWhiteTransparent.clone() ), [ 0, 0, 0 ], [ 0, 0, 0 ]]],
			XY: [[ new THREE.Mesh( new THREE.PlaneGeometry( 0.295, 0.295 ), matYellowTransparent.clone() ), [ 0.15, 0.15, 0 ]], [ new THREE.Line( lineGeometry, matLineYellow ), [ 0.18, 0.3, 0 ], null, [ 0.125, 1, 1 ]], [ new THREE.Line( lineGeometry, matLineYellow ), [ 0.3, 0.18, 0 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]]],
			YZ: [[ new THREE.Mesh( new THREE.PlaneGeometry( 0.295, 0.295 ), matCyanTransparent.clone() ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]], [ new THREE.Line( lineGeometry, matLineCyan ), [ 0, 0.18, 0.3 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]], [ new THREE.Line( lineGeometry, matLineCyan ), [ 0, 0.3, 0.18 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]],
			XZ: [[ new THREE.Mesh( new THREE.PlaneGeometry( 0.295, 0.295 ), matMagentaTransparent.clone() ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]], [ new THREE.Line( lineGeometry, matLineMagenta ), [ 0.18, 0, 0.3 ], null, [ 0.125, 1, 1 ]], [ new THREE.Line( lineGeometry, matLineMagenta ), [ 0.3, 0, 0.18 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]]
		};
		var pickerTranslate = {
			X: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0.6, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]],
			Y: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0, 0.6, 0 ]]],
			Z: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 1, 4, 1, false ), matInvisible ), [ 0, 0, 0.6 ], [ Math.PI / 2, 0, 0 ]]],
			XYZ: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.2, 0 ), matInvisible ) ]],
			XY: [[ new THREE.Mesh( new THREE.PlaneGeometry( 0.4, 0.4 ), matInvisible ), [ 0.2, 0.2, 0 ]]],
			YZ: [[ new THREE.Mesh( new THREE.PlaneGeometry( 0.4, 0.4 ), matInvisible ), [ 0, 0.2, 0.2 ], [ 0, Math.PI / 2, 0 ]]],
			XZ: [[ new THREE.Mesh( new THREE.PlaneGeometry( 0.4, 0.4 ), matInvisible ), [ 0.2, 0, 0.2 ], [ - Math.PI / 2, 0, 0 ]]]
		};
		var helperTranslate = {
			START: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]],
			END: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]],
			DELTA: [[ new THREE.Line( TranslateHelperGeometry(), matHelper ), null, null, null, 'helper' ]],
			X: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]],
			Y: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]],
			Z: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]]
		};
		var gizmoRotate = {
			X: [[ new THREE.Line( CircleGeometry( 1, 0.5 ), matLineRed ) ], [ new THREE.Mesh( new THREE.OctahedronGeometry( 0.04, 0 ), matRed ), [ 0, 0, 0.99 ], null, [ 1, 3, 1 ]]],
			Y: [[ new THREE.Line( CircleGeometry( 1, 0.5 ), matLineGreen ), null, [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( new THREE.OctahedronGeometry( 0.04, 0 ), matGreen ), [ 0, 0, 0.99 ], null, [ 3, 1, 1 ]]],
			Z: [[ new THREE.Line( CircleGeometry( 1, 0.5 ), matLineBlue ), null, [ 0, Math.PI / 2, 0 ]], [ new THREE.Mesh( new THREE.OctahedronGeometry( 0.04, 0 ), matBlue ), [ 0.99, 0, 0 ], null, [ 1, 3, 1 ]]],
			E: [[ new THREE.Line( CircleGeometry( 1.25, 1 ), matLineYellowTransparent ), null, [ 0, Math.PI / 2, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 1.17, 0, 0 ], [ 0, 0, - Math.PI / 2 ], [ 1, 1, 0.001 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ - 1.17, 0, 0 ], [ 0, 0, Math.PI / 2 ], [ 1, 1, 0.001 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 0, - 1.17, 0 ], [ Math.PI, 0, 0 ], [ 1, 1, 0.001 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.03, 0, 0.15, 4, 1, false ), matLineYellowTransparent ), [ 0, 1.17, 0 ], [ 0, 0, 0 ], [ 1, 1, 0.001 ]]],
			XYZE: [[ new THREE.Line( CircleGeometry( 1, 1 ), matLineGray ), null, [ 0, Math.PI / 2, 0 ]]]
		};
		var helperRotate = {
			AXIS: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]]
		};
		var pickerRotate = {
			X: [[ new THREE.Mesh( new THREE.TorusGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, - Math.PI / 2, - Math.PI / 2 ]]],
			Y: [[ new THREE.Mesh( new THREE.TorusGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ]]],
			Z: [[ new THREE.Mesh( new THREE.TorusGeometry( 1, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]],
			E: [[ new THREE.Mesh( new THREE.TorusGeometry( 1.25, 0.1, 2, 24 ), matInvisible ) ]],
			XYZE: [[ new THREE.Mesh( new THREE.SphereGeometry( 0.7, 10, 8 ), matInvisible ) ]]
		};
		var gizmoScale = {
			X: [[ new THREE.Mesh( scaleHandleGeometry, matRed ), [ 0.8, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Line( lineGeometry, matLineRed ), null, null, [ 0.8, 1, 1 ]]],
			Y: [[ new THREE.Mesh( scaleHandleGeometry, matGreen ), [ 0, 0.8, 0 ]], [ new THREE.Line( lineGeometry, matLineGreen ), null, [ 0, 0, Math.PI / 2 ], [ 0.8, 1, 1 ]]],
			Z: [[ new THREE.Mesh( scaleHandleGeometry, matBlue ), [ 0, 0, 0.8 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Line( lineGeometry, matLineBlue ), null, [ 0, - Math.PI / 2, 0 ], [ 0.8, 1, 1 ]]],
			XY: [[ new THREE.Mesh( scaleHandleGeometry, matYellowTransparent ), [ 0.85, 0.85, 0 ], null, [ 2, 2, 0.2 ]], [ new THREE.Line( lineGeometry, matLineYellow ), [ 0.855, 0.98, 0 ], null, [ 0.125, 1, 1 ]], [ new THREE.Line( lineGeometry, matLineYellow ), [ 0.98, 0.855, 0 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]]],
			YZ: [[ new THREE.Mesh( scaleHandleGeometry, matCyanTransparent ), [ 0, 0.85, 0.85 ], null, [ 0.2, 2, 2 ]], [ new THREE.Line( lineGeometry, matLineCyan ), [ 0, 0.855, 0.98 ], [ 0, 0, Math.PI / 2 ], [ 0.125, 1, 1 ]], [ new THREE.Line( lineGeometry, matLineCyan ), [ 0, 0.98, 0.855 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]],
			XZ: [[ new THREE.Mesh( scaleHandleGeometry, matMagentaTransparent ), [ 0.85, 0, 0.85 ], null, [ 2, 0.2, 2 ]], [ new THREE.Line( lineGeometry, matLineMagenta ), [ 0.855, 0, 0.98 ], null, [ 0.125, 1, 1 ]], [ new THREE.Line( lineGeometry, matLineMagenta ), [ 0.98, 0, 0.855 ], [ 0, - Math.PI / 2, 0 ], [ 0.125, 1, 1 ]]],
			XYZX: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 1.1, 0, 0 ]]],
			XYZY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 0, 1.1, 0 ]]],
			XYZZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.125, 0.125, 0.125 ), matWhiteTransparent.clone() ), [ 0, 0, 1.1 ]]]
		};
		var pickerScale = {
			X: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]],
			Y: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0, 0.5, 0 ]]],
			Z: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.8, 4, 1, false ), matInvisible ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ]]],
			XY: [[ new THREE.Mesh( scaleHandleGeometry, matInvisible ), [ 0.85, 0.85, 0 ], null, [ 3, 3, 0.2 ]]],
			YZ: [[ new THREE.Mesh( scaleHandleGeometry, matInvisible ), [ 0, 0.85, 0.85 ], null, [ 0.2, 3, 3 ]]],
			XZ: [[ new THREE.Mesh( scaleHandleGeometry, matInvisible ), [ 0.85, 0, 0.85 ], null, [ 3, 0.2, 3 ]]],
			XYZX: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 1.1, 0, 0 ]]],
			XYZY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 1.1, 0 ]]],
			XYZZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 0, 1.1 ]]]
		};
		var helperScale = {
			X: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]],
			Y: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]],
			Z: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]]
		}; // Creates an THREE.Object3D with gizmos described in custom hierarchy definition.

		var setupGizmo = function ( gizmoMap ) {

			var gizmo = new THREE.Object3D();

			for ( var name in gizmoMap ) {

				for ( var i = gizmoMap[ name ].length; i --; ) {

					var object = gizmoMap[ name ][ i ][ 0 ].clone();
					var position = gizmoMap[ name ][ i ][ 1 ];
					var rotation = gizmoMap[ name ][ i ][ 2 ];
					var scale = gizmoMap[ name ][ i ][ 3 ];
					var tag = gizmoMap[ name ][ i ][ 4 ]; // name and tag properties are essential for picking and updating logic.

					object.name = name;
					object.tag = tag;

					if ( position ) {

						object.position.set( position[ 0 ], position[ 1 ], position[ 2 ] );

					}

					if ( rotation ) {

						object.rotation.set( rotation[ 0 ], rotation[ 1 ], rotation[ 2 ] );

					}

					if ( scale ) {

						object.scale.set( scale[ 0 ], scale[ 1 ], scale[ 2 ] );

					}

					object.updateMatrix();
					var tempGeometry = object.geometry.clone();
					tempGeometry.applyMatrix4( object.matrix );
					object.geometry = tempGeometry;
					object.renderOrder = Infinity;
					object.position.set( 0, 0, 0 );
					object.rotation.set( 0, 0, 0 );
					object.scale.set( 1, 1, 1 );
					gizmo.add( object );

				}

			}

			return gizmo;

		}; // Reusable utility variables


		var tempVector = new THREE.Vector3( 0, 0, 0 );
		var tempEuler = new THREE.Euler();
		var alignVector = new THREE.Vector3( 0, 1, 0 );
		var zeroVector = new THREE.Vector3( 0, 0, 0 );
		var lookAtMatrix = new THREE.Matrix4();
		var tempQuaternion = new THREE.Quaternion();
		var tempQuaternion2 = new THREE.Quaternion();
		var identityQuaternion = new THREE.Quaternion();
		var unitX = new THREE.Vector3( 1, 0, 0 );
		var unitY = new THREE.Vector3( 0, 1, 0 );
		var unitZ = new THREE.Vector3( 0, 0, 1 ); // Gizmo creation

		this.gizmo = {};
		this.picker = {};
		this.helper = {};
		this.add( this.gizmo[ 'translate' ] = setupGizmo( gizmoTranslate ) );
		this.add( this.gizmo[ 'rotate' ] = setupGizmo( gizmoRotate ) );
		this.add( this.gizmo[ 'scale' ] = setupGizmo( gizmoScale ) );
		this.add( this.picker[ 'translate' ] = setupGizmo( pickerTranslate ) );
		this.add( this.picker[ 'rotate' ] = setupGizmo( pickerRotate ) );
		this.add( this.picker[ 'scale' ] = setupGizmo( pickerScale ) );
		this.add( this.helper[ 'translate' ] = setupGizmo( helperTranslate ) );
		this.add( this.helper[ 'rotate' ] = setupGizmo( helperRotate ) );
		this.add( this.helper[ 'scale' ] = setupGizmo( helperScale ) ); // Pickers should be hidden always

		this.picker[ 'translate' ].visible = false;
		this.picker[ 'rotate' ].visible = false;
		this.picker[ 'scale' ].visible = false; // updateMatrixWorld will update transformations and appearance of individual handles

		this.updateMatrixWorld = function () {

			var space = this.space;
			if ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation

			var quaternion = space === 'local' ? this.worldQuaternion : identityQuaternion; // Show only gizmos for current transform mode

			this.gizmo[ 'translate' ].visible = this.mode === 'translate';
			this.gizmo[ 'rotate' ].visible = this.mode === 'rotate';
			this.gizmo[ 'scale' ].visible = this.mode === 'scale';
			this.helper[ 'translate' ].visible = this.mode === 'translate';
			this.helper[ 'rotate' ].visible = this.mode === 'rotate';
			this.helper[ 'scale' ].visible = this.mode === 'scale';
			var handles = [];
			handles = handles.concat( this.picker[ this.mode ].children );
			handles = handles.concat( this.gizmo[ this.mode ].children );
			handles = handles.concat( this.helper[ this.mode ].children );

			for ( var i = 0; i < handles.length; i ++ ) {

				var handle = handles[ i ]; // hide aligned to camera

				handle.visible = true;
				handle.rotation.set( 0, 0, 0 );
				handle.position.copy( this.worldPosition );
				var factor;

				if ( this.camera.isOrthographicCamera ) {

					factor = ( this.camera.top - this.camera.bottom ) / this.camera.zoom;

				} else {

					factor = this.worldPosition.distanceTo( this.cameraPosition ) * Math.min( 1.9 * Math.tan( Math.PI * this.camera.fov / 360 ) / this.camera.zoom, 7 );

				}

				handle.scale.set( 1, 1, 1 ).multiplyScalar( factor * this.size / 7 ); // TODO: simplify helpers and consider decoupling from gizmo

				if ( handle.tag === 'helper' ) {

					handle.visible = false;

					if ( handle.name === 'AXIS' ) {

						handle.position.copy( this.worldPositionStart );
						handle.visible = !! this.axis;

						if ( this.axis === 'X' ) {

							tempQuaternion.setFromEuler( tempEuler.set( 0, 0, 0 ) );
							handle.quaternion.copy( quaternion ).multiply( tempQuaternion );

							if ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {

								handle.visible = false;

							}

						}

						if ( this.axis === 'Y' ) {

							tempQuaternion.setFromEuler( tempEuler.set( 0, 0, Math.PI / 2 ) );
							handle.quaternion.copy( quaternion ).multiply( tempQuaternion );

							if ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {

								handle.visible = false;

							}

						}

						if ( this.axis === 'Z' ) {

							tempQuaternion.setFromEuler( tempEuler.set( 0, Math.PI / 2, 0 ) );
							handle.quaternion.copy( quaternion ).multiply( tempQuaternion );

							if ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {

								handle.visible = false;

							}

						}

						if ( this.axis === 'XYZE' ) {

							tempQuaternion.setFromEuler( tempEuler.set( 0, Math.PI / 2, 0 ) );
							alignVector.copy( this.rotationAxis );
							handle.quaternion.setFromRotationMatrix( lookAtMatrix.lookAt( zeroVector, alignVector, unitY ) );
							handle.quaternion.multiply( tempQuaternion );
							handle.visible = this.dragging;

						}

						if ( this.axis === 'E' ) {

							handle.visible = false;

						}

					} else if ( handle.name === 'START' ) {

						handle.position.copy( this.worldPositionStart );
						handle.visible = this.dragging;

					} else if ( handle.name === 'END' ) {

						handle.position.copy( this.worldPosition );
						handle.visible = this.dragging;

					} else if ( handle.name === 'DELTA' ) {

						handle.position.copy( this.worldPositionStart );
						handle.quaternion.copy( this.worldQuaternionStart );
						tempVector.set( 1e-10, 1e-10, 1e-10 ).add( this.worldPositionStart ).sub( this.worldPosition ).multiplyScalar( - 1 );
						tempVector.applyQuaternion( this.worldQuaternionStart.clone().invert() );
						handle.scale.copy( tempVector );
						handle.visible = this.dragging;

					} else {

						handle.quaternion.copy( quaternion );

						if ( this.dragging ) {

							handle.position.copy( this.worldPositionStart );

						} else {

							handle.position.copy( this.worldPosition );

						}

						if ( this.axis ) {

							handle.visible = this.axis.search( handle.name ) !== - 1;

						}

					} // If updating helper, skip rest of the loop


					continue;

				} // Align handles to current local or world rotation


				handle.quaternion.copy( quaternion );

				if ( this.mode === 'translate' || this.mode === 'scale' ) {

					// Hide translate and scale axis facing the camera
					var AXIS_HIDE_TRESHOLD = 0.99;
					var PLANE_HIDE_TRESHOLD = 0.2;
					var AXIS_FLIP_TRESHOLD = 0.0;

					if ( handle.name === 'X' || handle.name === 'XYZX' ) {

						if ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {

							handle.scale.set( 1e-10, 1e-10, 1e-10 );
							handle.visible = false;

						}

					}

					if ( handle.name === 'Y' || handle.name === 'XYZY' ) {

						if ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {

							handle.scale.set( 1e-10, 1e-10, 1e-10 );
							handle.visible = false;

						}

					}

					if ( handle.name === 'Z' || handle.name === 'XYZZ' ) {

						if ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {

							handle.scale.set( 1e-10, 1e-10, 1e-10 );
							handle.visible = false;

						}

					}

					if ( handle.name === 'XY' ) {

						if ( Math.abs( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {

							handle.scale.set( 1e-10, 1e-10, 1e-10 );
							handle.visible = false;

						}

					}

					if ( handle.name === 'YZ' ) {

						if ( Math.abs( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {

							handle.scale.set( 1e-10, 1e-10, 1e-10 );
							handle.visible = false;

						}

					}

					if ( handle.name === 'XZ' ) {

						if ( Math.abs( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {

							handle.scale.set( 1e-10, 1e-10, 1e-10 );
							handle.visible = false;

						}

					} // Flip translate and scale axis ocluded behind another axis


					if ( handle.name.search( 'X' ) !== - 1 ) {

						if ( alignVector.copy( unitX ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {

							if ( handle.tag === 'fwd' ) {

								handle.visible = false;

							} else {

								handle.scale.x *= - 1;

							}

						} else if ( handle.tag === 'bwd' ) {

							handle.visible = false;

						}

					}

					if ( handle.name.search( 'Y' ) !== - 1 ) {

						if ( alignVector.copy( unitY ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {

							if ( handle.tag === 'fwd' ) {

								handle.visible = false;

							} else {

								handle.scale.y *= - 1;

							}

						} else if ( handle.tag === 'bwd' ) {

							handle.visible = false;

						}

					}

					if ( handle.name.search( 'Z' ) !== - 1 ) {

						if ( alignVector.copy( unitZ ).applyQuaternion( quaternion ).dot( this.eye ) < AXIS_FLIP_TRESHOLD ) {

							if ( handle.tag === 'fwd' ) {

								handle.visible = false;

							} else {

								handle.scale.z *= - 1;

							}

						} else if ( handle.tag === 'bwd' ) {

							handle.visible = false;

						}

					}

				} else if ( this.mode === 'rotate' ) {

					// Align handles to current local or world rotation
					tempQuaternion2.copy( quaternion );
					alignVector.copy( this.eye ).applyQuaternion( tempQuaternion.copy( quaternion ).invert() );

					if ( handle.name.search( 'E' ) !== - 1 ) {

						handle.quaternion.setFromRotationMatrix( lookAtMatrix.lookAt( this.eye, zeroVector, unitY ) );

					}

					if ( handle.name === 'X' ) {

						tempQuaternion.setFromAxisAngle( unitX, Math.atan2( - alignVector.y, alignVector.z ) );
						tempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );
						handle.quaternion.copy( tempQuaternion );

					}

					if ( handle.name === 'Y' ) {

						tempQuaternion.setFromAxisAngle( unitY, Math.atan2( alignVector.x, alignVector.z ) );
						tempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );
						handle.quaternion.copy( tempQuaternion );

					}

					if ( handle.name === 'Z' ) {

						tempQuaternion.setFromAxisAngle( unitZ, Math.atan2( alignVector.y, alignVector.x ) );
						tempQuaternion.multiplyQuaternions( tempQuaternion2, tempQuaternion );
						handle.quaternion.copy( tempQuaternion );

					}

				} // Hide disabled axes


				handle.visible = handle.visible && ( handle.name.indexOf( 'X' ) === - 1 || this.showX );
				handle.visible = handle.visible && ( handle.name.indexOf( 'Y' ) === - 1 || this.showY );
				handle.visible = handle.visible && ( handle.name.indexOf( 'Z' ) === - 1 || this.showZ );
				handle.visible = handle.visible && ( handle.name.indexOf( 'E' ) === - 1 || this.showX && this.showY && this.showZ ); // highlight selected axis

				handle.material._opacity = handle.material._opacity || handle.material.opacity;
				handle.material._color = handle.material._color || handle.material.color.clone();
				handle.material.color.copy( handle.material._color );
				handle.material.opacity = handle.material._opacity;

				if ( ! this.enabled ) {

					handle.material.opacity *= 0.5;
					handle.material.color.lerp( new THREE.Color( 1, 1, 1 ), 0.5 );

				} else if ( this.axis ) {

					if ( handle.name === this.axis ) {

						handle.material.opacity = 1.0;
						handle.material.color.lerp( new THREE.Color( 1, 1, 1 ), 0.5 );

					} else if ( this.axis.split( '' ).some( function ( a ) {

						return handle.name === a;

					} ) ) {

						handle.material.opacity = 1.0;
						handle.material.color.lerp( new THREE.Color( 1, 1, 1 ), 0.5 );

					} else {

						handle.material.opacity *= 0.25;
						handle.material.color.lerp( new THREE.Color( 1, 1, 1 ), 0.5 );

					}

				}

			}

			THREE.Object3D.prototype.updateMatrixWorld.call( this );

		};

	};

	TransformControlsGizmo.prototype = Object.assign( Object.create( THREE.Object3D.prototype ), {
		constructor: TransformControlsGizmo,
		isTransformControlsGizmo: true
	} );

	var TransformControlsPlane = function () {

		'use strict';

		THREE.Mesh.call( this, new THREE.PlaneGeometry( 100000, 100000, 2, 2 ), new THREE.MeshBasicMaterial( {
			visible: false,
			wireframe: true,
			side: THREE.DoubleSide,
			transparent: true,
			opacity: 0.1,
			toneMapped: false
		} ) );
		this.type = 'TransformControlsPlane';
		var unitX = new THREE.Vector3( 1, 0, 0 );
		var unitY = new THREE.Vector3( 0, 1, 0 );
		var unitZ = new THREE.Vector3( 0, 0, 1 );
		var tempVector = new THREE.Vector3();
		var dirVector = new THREE.Vector3();
		var alignVector = new THREE.Vector3();
		var tempMatrix = new THREE.Matrix4();
		var identityQuaternion = new THREE.Quaternion();

		this.updateMatrixWorld = function () {

			var space = this.space;
			this.position.copy( this.worldPosition );
			if ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation

			unitX.set( 1, 0, 0 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );
			unitY.set( 0, 1, 0 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion );
			unitZ.set( 0, 0, 1 ).applyQuaternion( space === 'local' ? this.worldQuaternion : identityQuaternion ); // Align the plane for current transform mode, axis and space.

			alignVector.copy( unitY );

			switch ( this.mode ) {

				case 'translate':
				case 'scale':
					switch ( this.axis ) {

						case 'X':
							alignVector.copy( this.eye ).cross( unitX );
							dirVector.copy( unitX ).cross( alignVector );
							break;

						case 'Y':
							alignVector.copy( this.eye ).cross( unitY );
							dirVector.copy( unitY ).cross( alignVector );
							break;

						case 'Z':
							alignVector.copy( this.eye ).cross( unitZ );
							dirVector.copy( unitZ ).cross( alignVector );
							break;

						case 'XY':
							dirVector.copy( unitZ );
							break;

						case 'YZ':
							dirVector.copy( unitX );
							break;

						case 'XZ':
							alignVector.copy( unitZ );
							dirVector.copy( unitY );
							break;

						case 'XYZ':
						case 'E':
							dirVector.set( 0, 0, 0 );
							break;

					}

					break;

				case 'rotate':
				default:
				// special case for rotate
					dirVector.set( 0, 0, 0 );

			}

			if ( dirVector.length() === 0 ) {

				// If in rotate mode, make the plane parallel to camera
				this.quaternion.copy( this.cameraQuaternion );

			} else {

				tempMatrix.lookAt( tempVector.set( 0, 0, 0 ), dirVector, alignVector );
				this.quaternion.setFromRotationMatrix( tempMatrix );

			}

			THREE.Object3D.prototype.updateMatrixWorld.call( this );

		};

	};

	TransformControlsPlane.prototype = Object.assign( Object.create( THREE.Mesh.prototype ), {
		constructor: TransformControlsPlane,
		isTransformControlsPlane: true
	} );

	THREE.TransformControls = TransformControls;
	THREE.TransformControlsGizmo = TransformControlsGizmo;
	THREE.TransformControlsPlane = TransformControlsPlane;

} )();
